Punch



R. J. THOMPSON. PUNCH.

Patented June 30, 1896.

U TE STATES PATENT OFFICE.

ROBERT JAMES THOMPSON, OF GRANDIN, MISSOURI.

PUNCH.

SPECIFICATION forming part of Letters Patent No. 563,098, dated June 30,1896. Application filed July 15,1895. Serial No. 556,008. (No model.)

To ctZZ whom, it may concern:

Be it known that 1, ROBERT JAMES THOMP- SON, of the city of Grandin,Carter county, State of Missouri, have invented certain new and usefulImprovements in a Punch, of which the following is a full, clear, andexact description, reference being had to the accompanying drawings,forming a part hereof.

My inventionrelates to an improved punch; and it consists in the novelconstruction, combination, and arrangement of parts hereinafterdescribed and claimed.

In the drawings, Figure 1 is a side elevation of my improved punch. Fig.2 is a vertical sectional view taken approximately on the indicated line2 2 of Fig. 1. Fig. 3 is a transverse sectional View taken approximatelyon the indicated line 3 3 of Fig. 1. Fig. 4 is a view in perspective ofa link of which I make use in carrying out my invention. Fig. 5 is aview in perspective of a dieplate such as I use in my improved punch.Fig. 6 is a rear elevation of an eccentric lever-head and avertically-moving block of which I make use, said view being takenapproximately on the indicated line 6 6 of Fig.

2. This vertically-moving block is the punchhead, and carries the punch.This view shows the upper part of the lever broken off and also showsthe connection between the lever and the punch-head. Fig. 7 is a view inperspective of a link that connects the eccentrio with thevertically-moving punch-head. Fig. 8 is a view in perspective of averticallymoving punch-head. Fig. 9 is a vertical sectional view of amodified form of this verti- 4 cally-moving punch-head.

Referring by numerals to the accompanying drawings, 1 indicates the baseof my improved punch, from which extends upwardly a body portion 2,saidbody portion and base being preferably cast or formed integral. Theupper end 3 of the body portion 2 is approximately only half as thick asthe main portion of said body, and formed integral with the upper end ofthe body and extending laterally therefrom is a projection 4. To thisprojection 4 is fulcrumed the lower end of a handle or arm 5, in whichis formed a series of apertures 6. A U-shaped frame 7 is bolted to theupper edge of the body portion 2,

and extends upwardly therefrom parallel with the portion 3 of said body2. Formed in the body portion 2, above the base 1, is an opening 8, anda portion 9 depends from the body portion 2 above the opening 8. Formedin the body portion 2, above this depending portion and in front of theupper end 3, is a vertically-arranged aperture 10, the sides of whichare rabbeted. A bore 11 extends from this aperture 10 vertically throughthe de pending portion 9.

Extending upwardly from the base 1, at a point immediately beneath thedepending portion 9, is a block 12, the front and rear faces of whichare dovetailed, as indicated by 13. An aperture 14 is formed throughthis block 12 and base 1 at a point immediately below and in alinementwith the bore 11.

Formed integral with and extending laterally from the lower portion ofthe body 2 and to one side of the opening 8 is a lug or projection 15,to which is bolted a horizontally-ad j ustable guide 16, having anupturned outer end 17.

18 indicates a circular block that is eccentrically pivoted upon a pin19,that passes through the U-shaped frame 7 and through the portion 3 ofthe body 2. Formed integral with and extending upwardly from said block18 is an arm 19, from the upper end of which project pins, such as 20. Alink 21 has its ends pivoted to the arm 5 by a bolt 22, passing throughone of the apertures 6 and through apertures 23, formed in the end ofsaid link. Notches 24 are formed in the opposite end of this link 21,said notches 24 being of such size as that the pins 20 may be locatedtherein.

Formed in the rear face of the circular block 18 is a recess 25, and inthe center of said block 18 and extending toward the face thereof is anaperture 26.

27 indicates the punch-head, which is of rectangular shape, havingprojections 28 arranged to move vertically in the T-slot or plane orslot 10.

Formed in the rear face of this punch-head 27 is an annular groove 29,in the center of which is a pin 30, that is formed integral with theblock 27. This annular groove 29 joins with a perpendicular groove whichcommunicates with the top surface of the block 27, said top surfacebeing concaved, as indicated by 31, the curvature of said concaved upperface being identical with the curvature of the periphery of the block18. Fixed to and depending from this punch-head 27 is a pin 32, thatperforms the function of a punch, and said pin passes through thevertical bore 11. In some instances a vertical aperture 33 is formedthrough the punch-head 27 and the pin 32 is provided with a head 34 andpassed through said aperture 33. By this construction different-sizedpins may be used in my improved punch, Fig. 9.

35 indicates a link, the upper end 36 of which is turned at right anglesto the body portion, and said end 36 is arranged in the aperture 26 inthe circular block 18. The body portion of the link extends downwardlythrough the recess 25, and a ring 37 is formed integral with the lowerend thereof, said ring lying in the annular groove 29, formed in therear face of the punch-head 27 and engaging around the pin 30 in thecenter of said annular groove. hen the link 35 connects the punch-head27 and the circular block 18, the periphery of said block 18 ridesdirectly upon the concaved upper face 31 of said punch-head 27.

39 indicates a die-plate having downwardly and inwardly bent ends 40,that normally engage in the dovetailed ends 13 of the block 12. Formedin said plate 39, adjacent the ends thereof, are apertures 41, that areso located as that one of them will always be located directly over thebore 14 in the base 1 and immediately below the bore 11 through whichthe punch or pin 32 passes. A setscrew 42 passes horizontally throughone of the downwardly-turned ends 40 and engages against the end of theblock 12, thus holding said die-plate 39 rigidly upon said block 12.

plate 39, having the proper aperture therein, is arranged upon the block12 and the guide 16 set as desired, the work is laid directly upon thedie-plate 39, or as indicated by dotted lines in Fig. 1. The operatornow grasps the upper end of the handle or arm 5 and moves the same inthe direction of the arrow A, Fig. 1, and as the upper end of the arm 19is connected to said arm 5by the link 21, said arm 19 will also be movedin the direction as indicated by the arrow. Owing to the manner in whichthe circular block or eccentric lever-head 18 is pivoted, it will, withthis movement, move eccentrically downward and necessarily engage uponthe upper face 31 of the punch-head 27 and move said punch headdownwardly. The punch or pin 32, carried by said punch-head 27, willmove downwardly through the bore 11, engage upon the work, pass throughthe same and through the aperture 41 in the die-plate 39 and into thebore 14 in the base 1. A reverse movement of the arm 5 brings thevarious parts into their normal positions, or as that seen in Fig. 1.

The power applied to the arm 5 will be greatly increased, as it iscommunicated to the punch-head 27 and punch or pin 32, carried thereby,owing to the system of leverage of which I make use. The end of the link21 may be adjusted at different points on the arm 5 away from the pointwhere said arm is arranged for vertical movement within said T-slot,said punch-head having a coneaved upper face and carrying a removablepunch or pin and having an annular groove intersecting a straight groovein its rear face, a lever-head eccentrically pivoted to the frame workabove the punch-head, a link fitting around the stud formed by theannular groove in the punch-head and extending upward in the straightgroove connecting said leverhead and the punch-head, an arm formedintegral with and extending upwardly from said lever-head, an armfulcrumed to the frame, and an adjustable link connecting said arm andthe upper end of the arm formed integral with the lever-head. Theoperation is as follows: After the die- 2. In an improved punch, asuitable framework, a removable die-plate located within said framework,a punch-head arranged for vertical movement above said die-plate in aT-slot in said frame, said punch-head having an annular grooveintersecting a straight groove in its rear face, a punch carried by saidpunch-head, a lever-head eccentrically pivoted above said punch-head inthe framework, a link fitting around the stud formed. by the annulargroove in the punch-head and extending upward in the straight grooveconnecting the punch-head with the lever-head, and means for operatingthe lever-head.

In testimony whereof I affix my signature in presence of two witnesses.

ROBERT JAMES THOMPSON.

\Vitnesses:

O. F. BABEL, M. E. LEONARD.

